-91.33% is the change from 623 to 54
Calculation steps:
[( 54 - 623 ) ÷ 623] x 100 = -91.33%
Formula
Percentage change = [(54 - 623) / 623] x 100
Subtract the new number by the original number
54 - 623 = -569
-569 ÷ 623 = -0.913322632423756
-0.913322632423756 x 100 = -91.33%