-66.41% is the change from 661 to 222
Calculation steps:
[( 222 - 661 ) ÷ 661] x 100 = -66.41%
Formula
Percentage change = [(222 - 661) / 661] x 100
Subtract the new number by the original number
222 - 661 = -439
-439 ÷ 661 = -0.6641452344931922
-0.6641452344931922 x 100 = -66.41%