Perbill
A fixed-point proportion measured in parts per billion.
In plain language
A Perbill raw value of 1,000,000,000 equals 100%; 100,000,000 equals 10%; and 10 equals 0.000001%.
Why it matters
Misreading the scale can turn a tiny parameter into an apparent 10% value.
Real Vara examples
| Referendum | Governance | Execution | Direct addresses |
|---|---|---|---|
| #4 Set the initial nomination-pool bond and commission configuration This referendum configured two entry thresholds for nomination pools and wrote a very small raw commission-cap value. | Executed | Dispatch succeeded | 65 |
| #12 Set the nomination-pool commission cap to 10% This referendum set the maximum commission a nomination pool may charge to 10%. | Executed | Dispatch succeeded | 41 |