-69.09% is the change from 220 to 68
Calculation steps:
[( 68 - 220 ) ÷ 220] x 100 = -69.09%
Formula
Percentage change = [(68 - 220) / 220] x 100
Subtract the new number by the original number
68 - 220 = -152
-152 ÷ 220 = -0.6909090909090909
-0.6909090909090909 x 100 = -69.09%