-88.65% is the change from 661 to 75
Calculation steps:
[( 75 - 661 ) ÷ 661] x 100 = -88.65%
Formula
Percentage change = [(75 - 661) / 661] x 100
Subtract the new number by the original number
75 - 661 = -586
-586 ÷ 661 = -0.886535552193646
-0.886535552193646 x 100 = -88.65%