-26.17% is the change from 661 to 488
Calculation steps:
[( 488 - 661 ) ÷ 661] x 100 = -26.17%
Formula
Percentage change = [(488 - 661) / 661] x 100
Subtract the new number by the original number
488 - 661 = -173
-173 ÷ 661 = -0.2617246596066566
-0.2617246596066566 x 100 = -26.17%