-75.79% is the change from 661 to 160
Calculation steps:
[( 160 - 661 ) ÷ 661] x 100 = -75.79%
Formula
Percentage change = [(160 - 661) / 661] x 100
Subtract the new number by the original number
160 - 661 = -501
-501 ÷ 661 = -0.7579425113464447
-0.7579425113464447 x 100 = -75.79%