38.7% is the change from 447 to 620
Calculation steps:
[( 620 - 447 ) ÷ 447] x 100 = 38.7%
Formula
Percentage change = [(620 - 447) / 447] x 100
Subtract the new number by the original number
620 - 447 = 173
173 ÷ 447 = 0.3870246085011186
0.3870246085011186 x 100 = 38.7%