121.83% is the change from 142 to 315
Calculation steps:
[( 315 - 142 ) ÷ 142] x 100 = 121.83%
Formula
Percentage change = [(315 - 142) / 142] x 100
Subtract the new number by the original number
315 - 142 = 173
173 ÷ 142 = 1.2183098591549295
1.2183098591549295 x 100 = 121.83%