-26.48% is the change from 661 to 486
Calculation steps:
[( 486 - 661 ) ÷ 661] x 100 = -26.48%
Formula
Percentage change = [(486 - 661) / 661] x 100
Subtract the new number by the original number
486 - 661 = -175
-175 ÷ 661 = -0.264750378214826
-0.264750378214826 x 100 = -26.48%