40.54% is the change from 222 to 312
Calculation steps:
[( 312 - 222 ) ÷ 222] x 100 = 40.54%
Formula
Percentage change = [(312 - 222) / 222] x 100
Subtract the new number by the original number
312 - 222 = 90
90 ÷ 222 = 0.40540540540540543
0.40540540540540543 x 100 = 40.54%