31% is the change from 471 to 617
Calculation steps:
[( 617 - 471 ) ÷ 471] x 100 = 31%
Formula
Percentage change = [(617 - 471) / 471] x 100
Subtract the new number by the original number
617 - 471 = 146
146 ÷ 471 = 0.3099787685774947
0.3099787685774947 x 100 = 31%