31.63% is the change from 471 to 620
Calculation steps:
[( 620 - 471 ) ÷ 471] x 100 = 31.63%
Formula
Percentage change = [(620 - 471) / 471] x 100
Subtract the new number by the original number
620 - 471 = 149
149 ÷ 471 = 0.31634819532908703
0.31634819532908703 x 100 = 31.63%