120% is the change from 115 to 253
Calculation steps:
[( 253 - 115 ) ÷ 115] x 100 = 120%
Formula
Percentage change = [(253 - 115) / 115] x 100
Subtract the new number by the original number
253 - 115 = 138
138 ÷ 115 = 1.2
1.2 x 100 = 120%
Example