146.09% is the change from 128 to 315
Calculation steps:
[( 315 - 128 ) ÷ 128] x 100 = 146.09%
Formula
Percentage change = [(315 - 128) / 128] x 100
Subtract the new number by the original number
315 - 128 = 187
187 ÷ 128 = 1.4609375
1.4609375 x 100 = 146.09%