-9.92% is the change from 857 to 772
Calculation steps:
[( 772 - 857 ) ÷ 857] x 100 = -9.92%
Formula
Percentage change = [(772 - 857) / 857] x 100
Subtract the new number by the original number
772 - 857 = -85
-85 ÷ 857 = -0.09918319719953325
-0.09918319719953325 x 100 = -9.92%