-39.37% is the change from 221 to 134
Calculation steps:
[( 134 - 221 ) ÷ 221] x 100 = -39.37%
Formula
Percentage change = [(134 - 221) / 221] x 100
Subtract the new number by the original number
134 - 221 = -87
-87 ÷ 221 = -0.3936651583710407
-0.3936651583710407 x 100 = -39.37%