42.98% is the change from 121 to 173
Calculation steps:
[( 173 - 121 ) ÷ 121] x 100 = 42.98%
Formula
Percentage change = [(173 - 121) / 121] x 100
Subtract the new number by the original number
173 - 121 = 52
52 ÷ 121 = 0.4297520661157025
0.4297520661157025 x 100 = 42.98%