-20.86% is the change from 513 to 406
Calculation steps:
[( 406 - 513 ) ÷ 513] x 100 = -20.86%
Formula
Percentage change = [(406 - 513) / 513] x 100
Subtract the new number by the original number
406 - 513 = -107
-107 ÷ 513 = -0.20857699805068225
-0.20857699805068225 x 100 = -20.86%