772.6% is the change from 73 to 637
Calculation steps:
[( 637 - 73 ) ÷ 73] x 100 = 772.6%
Formula
Percentage change = [(637 - 73) / 73] x 100
Subtract the new number by the original number
637 - 73 = 564
564 ÷ 73 = 7.726027397260274
7.726027397260274 x 100 = 772.6%