-88.55% is the change from 131 to 15
Calculation steps:
[( 15 - 131 ) ÷ 131] x 100 = -88.55%
Formula
Percentage change = [(15 - 131) / 131] x 100
Subtract the new number by the original number
15 - 131 = -116
-116 ÷ 131 = -0.8854961832061069
-0.8854961832061069 x 100 = -88.55%