-91.35% is the change from 624 to 54
Calculation steps:
[( 54 - 624 ) ÷ 624] x 100 = -91.35%
Formula
Percentage change = [(54 - 624) / 624] x 100
Subtract the new number by the original number
54 - 624 = -570
-570 ÷ 624 = -0.9134615384615384
-0.9134615384615384 x 100 = -91.35%