-87.4% is the change from 627 to 79
Calculation steps:
[( 79 - 627 ) ÷ 627] x 100 = -87.4%
Formula
Percentage change = [(79 - 627) / 627] x 100
Subtract the new number by the original number
79 - 627 = -548
-548 ÷ 627 = -0.8740031897926634
-0.8740031897926634 x 100 = -87.4%