54.84% is the change from 155 to 240
Calculation steps:
[( 240 - 155 ) ÷ 155] x 100 = 54.84%
Formula
Percentage change = [(240 - 155) / 155] x 100
Subtract the new number by the original number
240 - 155 = 85
85 ÷ 155 = 0.5483870967741935
0.5483870967741935 x 100 = 54.84%