-63.84% is the change from 661 to 239
Calculation steps:
[( 239 - 661 ) ÷ 661] x 100 = -63.84%
Formula
Percentage change = [(239 - 661) / 661] x 100
Subtract the new number by the original number
239 - 661 = -422
-422 ÷ 661 = -0.6384266263237519
-0.6384266263237519 x 100 = -63.84%