143.75% is the change from 128 to 312
Calculation steps:
[( 312 - 128 ) ÷ 128] x 100 = 143.75%
Formula
Percentage change = [(312 - 128) / 128] x 100
Subtract the new number by the original number
312 - 128 = 184
184 ÷ 128 = 1.4375
1.4375 x 100 = 143.75%