123.48% is the change from 115 to 257
Calculation steps:
[( 257 - 115 ) ÷ 115] x 100 = 123.48%
Formula
Percentage change = [(257 - 115) / 115] x 100
Subtract the new number by the original number
257 - 115 = 142
142 ÷ 115 = 1.2347826086956522
1.2347826086956522 x 100 = 123.48%