30.97% is the change from 155 to 203
Calculation steps:
[( 203 - 155 ) ÷ 155] x 100 = 30.97%
Formula
Percentage change = [(203 - 155) / 155] x 100
Subtract the new number by the original number
203 - 155 = 48
48 ÷ 155 = 0.3096774193548387
0.3096774193548387 x 100 = 30.97%