-69.14% is the change from 661 to 204
Calculation steps:
[( 204 - 661 ) ÷ 661] x 100 = -69.14%
Formula
Percentage change = [(204 - 661) / 661] x 100
Subtract the new number by the original number
204 - 661 = -457
-457 ÷ 661 = -0.6913767019667171
-0.6913767019667171 x 100 = -69.14%