-2.54% is the change from 118 to 115
Calculation steps:
[( 115 - 118 ) ÷ 118] x 100 = -2.54%
Formula
Percentage change = [(115 - 118) / 118] x 100
Subtract the new number by the original number
115 - 118 = -3
-3 ÷ 118 = -0.025423728813559324
-0.025423728813559324 x 100 = -2.54%