31.65% is the change from 237 to 312
Calculation steps:
[( 312 - 237 ) ÷ 237] x 100 = 31.65%
Formula
Percentage change = [(312 - 237) / 237] x 100
Subtract the new number by the original number
312 - 237 = 75
75 ÷ 237 = 0.31645569620253167
0.31645569620253167 x 100 = 31.65%