-87.66% is the change from 624 to 77
Calculation steps:
[( 77 - 624 ) ÷ 624] x 100 = -87.66%
Formula
Percentage change = [(77 - 624) / 624] x 100
Subtract the new number by the original number
77 - 624 = -547
-547 ÷ 624 = -0.8766025641025641
-0.8766025641025641 x 100 = -87.66%