-71.76% is the change from 556 to 157
Calculation steps:
[( 157 - 556 ) ÷ 556] x 100 = -71.76%
Formula
Percentage change = [(157 - 556) / 556] x 100
Subtract the new number by the original number
157 - 556 = -399
-399 ÷ 556 = -0.7176258992805755
-0.7176258992805755 x 100 = -71.76%