-89.89% is the change from 623 to 63
Calculation steps:
[( 63 - 623 ) ÷ 623] x 100 = -89.89%
Formula
Percentage change = [(63 - 623) / 623] x 100
Subtract the new number by the original number
63 - 623 = -560
-560 ÷ 623 = -0.898876404494382
-0.898876404494382 x 100 = -89.89%