-90.27% is the change from 935 to 91
Calculation steps:
[( 91 - 935 ) ÷ 935] x 100 = -90.27%
Formula
Percentage change = [(91 - 935) / 935] x 100
Subtract the new number by the original number
91 - 935 = -844
-844 ÷ 935 = -0.9026737967914439
-0.9026737967914439 x 100 = -90.27%