787.5% is the change from 72 to 639
Calculation steps:
[( 639 - 72 ) ÷ 72] x 100 = 787.5%
Formula
Percentage change = [(639 - 72) / 72] x 100
Subtract the new number by the original number
639 - 72 = 567
567 ÷ 72 = 7.875
7.875 x 100 = 787.5%
Example