117.24% is the change from 145 to 315
Calculation steps:
[( 315 - 145 ) ÷ 145] x 100 = 117.24%
Formula
Percentage change = [(315 - 145) / 145] x 100
Subtract the new number by the original number
315 - 145 = 170
170 ÷ 145 = 1.1724137931034482
1.1724137931034482 x 100 = 117.24%