-95.48% is the change from 221 to 10
Calculation steps:
[( 10 - 221 ) ÷ 221] x 100 = -95.48%
Formula
Percentage change = [(10 - 221) / 221] x 100
Subtract the new number by the original number
10 - 221 = -211
-211 ÷ 221 = -0.9547511312217195
-0.9547511312217195 x 100 = -95.48%