36.8% is the change from 231 to 316
Calculation steps:
[( 316 - 231 ) ÷ 231] x 100 = 36.8%
Formula
Percentage change = [(316 - 231) / 231] x 100
Subtract the new number by the original number
316 - 231 = 85
85 ÷ 231 = 0.36796536796536794
0.36796536796536794 x 100 = 36.8%