Foundry Book

percentDelta

Signature

function percentDelta(uint256 a, uint256 b) internal pure returns (uint256)

function percentDelta(int256 a, int256 b) internal pure returns (uint256)

Description

Returns the difference between two numbers in percentage, where 1e18 is 100%. More precisely, percentDelta(a, b) computes abs((a-b) / b) * 1e18.

Example

uint256 percent150 = stdMath.percentDelta(uint256(125), 50);
uint256 percent60 = stdMath.percentDelta(uint256(50), 125);