-69.59% is the change from 661 to 201
Calculation steps:
[( 201 - 661 ) ÷ 661] x 100 = -69.59%
Formula
Percentage change = [(201 - 661) / 661] x 100
Subtract the new number by the original number
201 - 661 = -460
-460 ÷ 661 = -0.6959152798789713
-0.6959152798789713 x 100 = -69.59%