-69.23% is the change from 221 to 68
Calculation steps:
[( 68 - 221 ) ÷ 221] x 100 = -69.23%
Formula
Percentage change = [(68 - 221) / 221] x 100
Subtract the new number by the original number
68 - 221 = -153
-153 ÷ 221 = -0.6923076923076923
-0.6923076923076923 x 100 = -69.23%