-89.09% is the change from 623 to 68
Calculation steps:
[( 68 - 623 ) ÷ 623] x 100 = -89.09%
Formula
Percentage change = [(68 - 623) / 623] x 100
Subtract the new number by the original number
68 - 623 = -555
-555 ÷ 623 = -0.8908507223113965
-0.8908507223113965 x 100 = -89.09%