-87.42% is the change from 628 to 79
Calculation steps:
[( 79 - 628 ) ÷ 628] x 100 = -87.42%
Formula
Percentage change = [(79 - 628) / 628] x 100
Subtract the new number by the original number
79 - 628 = -549
-549 ÷ 628 = -0.8742038216560509
-0.8742038216560509 x 100 = -87.42%