29.98% is the change from 477 to 620
Calculation steps:
[( 620 - 477 ) ÷ 477] x 100 = 29.98%
Formula
Percentage change = [(620 - 477) / 477] x 100
Subtract the new number by the original number
620 - 477 = 143
143 ÷ 477 = 0.29979035639413
0.29979035639413 x 100 = 29.98%