79.35% is the change from 155 to 278
Calculation steps:
[( 278 - 155 ) ÷ 155] x 100 = 79.35%
Formula
Percentage change = [(278 - 155) / 155] x 100
Subtract the new number by the original number
278 - 155 = 123
123 ÷ 155 = 0.7935483870967742
0.7935483870967742 x 100 = 79.35%