-66.06% is the change from 221 to 75
Calculation steps:
[( 75 - 221 ) ÷ 221] x 100 = -66.06%
Formula
Percentage change = [(75 - 221) / 221] x 100
Subtract the new number by the original number
75 - 221 = -146
-146 ÷ 221 = -0.6606334841628959
-0.6606334841628959 x 100 = -66.06%