-91.29% is the change from 620 to 54
Calculation steps:
[( 54 - 620 ) ÷ 620] x 100 = -91.29%
Formula
Percentage change = [(54 - 620) / 620] x 100
Subtract the new number by the original number
54 - 620 = -566
-566 ÷ 620 = -0.9129032258064517
-0.9129032258064517 x 100 = -91.29%