77.56% is the change from 156 to 277
Calculation steps:
[( 277 - 156 ) ÷ 156] x 100 = 77.56%
Formula
Percentage change = [(277 - 156) / 156] x 100
Subtract the new number by the original number
277 - 156 = 121
121 ÷ 156 = 0.7756410256410257
0.7756410256410257 x 100 = 77.56%