-27.36% is the change from 910 to 661
Calculation steps:
[( 661 - 910 ) ÷ 910] x 100 = -27.36%
Formula
Percentage change = [(661 - 910) / 910] x 100
Subtract the new number by the original number
661 - 910 = -249
-249 ÷ 910 = -0.27362637362637365
-0.27362637362637365 x 100 = -27.36%