-50% is the change from 236 to 118
Calculation steps:
[( 118 - 236 ) ÷ 236] x 100 = -50%
Formula
Percentage change = [(118 - 236) / 236] x 100
Subtract the new number by the original number
118 - 236 = -118
-118 ÷ 236 = -0.5
-0.5 x 100 = -50%
Example