-69.68% is the change from 221 to 67
Calculation steps:
[( 67 - 221 ) ÷ 221] x 100 = -69.68%
Formula
Percentage change = [(67 - 221) / 221] x 100
Subtract the new number by the original number
67 - 221 = -154
-154 ÷ 221 = -0.6968325791855203
-0.6968325791855203 x 100 = -69.68%