-15.27% is the change from 910 to 771
Calculation steps:
[( 771 - 910 ) ÷ 910] x 100 = -15.27%
Formula
Percentage change = [(771 - 910) / 910] x 100
Subtract the new number by the original number
771 - 910 = -139
-139 ÷ 910 = -0.15274725274725276
-0.15274725274725276 x 100 = -15.27%