-86.88% is the change from 221 to 29
Calculation steps:
[( 29 - 221 ) ÷ 221] x 100 = -86.88%
Formula
Percentage change = [(29 - 221) / 221] x 100
Subtract the new number by the original number
29 - 221 = -192
-192 ÷ 221 = -0.8687782805429864
-0.8687782805429864 x 100 = -86.88%