-42.44% is the change from 271 to 156
Calculation steps:
[( 156 - 271 ) ÷ 271] x 100 = -42.44%
Formula
Percentage change = [(156 - 271) / 271] x 100
Subtract the new number by the original number
156 - 271 = -115
-115 ÷ 271 = -0.42435424354243545
-0.42435424354243545 x 100 = -42.44%