-2.96% is the change from 135 to 131
Calculation steps:
[( 131 - 135 ) ÷ 135] x 100 = -2.96%
Formula
Percentage change = [(131 - 135) / 135] x 100
Subtract the new number by the original number
131 - 135 = -4
-4 ÷ 135 = -0.02962962962962963
-0.02962962962962963 x 100 = -2.96%