945.9% is the change from 61 to 638
Calculation steps:
[( 638 - 61 ) ÷ 61] x 100 = 945.9%
Formula
Percentage change = [(638 - 61) / 61] x 100
Subtract the new number by the original number
638 - 61 = 577
577 ÷ 61 = 9.459016393442623
9.459016393442623 x 100 = 945.9%