-31.55% is the change from 168 to 115
Calculation steps:
[( 115 - 168 ) ÷ 168] x 100 = -31.55%
Formula
Percentage change = [(115 - 168) / 168] x 100
Subtract the new number by the original number
115 - 168 = -53
-53 ÷ 168 = -0.31547619047619047
-0.31547619047619047 x 100 = -31.55%