-42.6% is the change from 277 to 159
Calculation steps:
[( 159 - 277 ) ÷ 277] x 100 = -42.6%
Formula
Percentage change = [(159 - 277) / 277] x 100
Subtract the new number by the original number
159 - 277 = -118
-118 ÷ 277 = -0.4259927797833935
-0.4259927797833935 x 100 = -42.6%