-54.39% is the change from 513 to 234
Calculation steps:
[( 234 - 513 ) ÷ 513] x 100 = -54.39%
Formula
Percentage change = [(234 - 513) / 513] x 100
Subtract the new number by the original number
234 - 513 = -279
-279 ÷ 513 = -0.543859649122807
-0.543859649122807 x 100 = -54.39%