37.44% is the change from 227 to 312
Calculation steps:
[( 312 - 227 ) ÷ 227] x 100 = 37.44%
Formula
Percentage change = [(312 - 227) / 227] x 100
Subtract the new number by the original number
312 - 227 = 85
85 ÷ 227 = 0.3744493392070485
0.3744493392070485 x 100 = 37.44%