-23.39% is the change from 513 to 393
Calculation steps:
[( 393 - 513 ) ÷ 513] x 100 = -23.39%
Formula
Percentage change = [(393 - 513) / 513] x 100
Subtract the new number by the original number
393 - 513 = -120
-120 ÷ 513 = -0.23391812865497075
-0.23391812865497075 x 100 = -23.39%