-89.28% is the change from 849 to 91
Calculation steps:
[( 91 - 849 ) ÷ 849] x 100 = -89.28%
Formula
Percentage change = [(91 - 849) / 849] x 100
Subtract the new number by the original number
91 - 849 = -758
-758 ÷ 849 = -0.8928150765606596
-0.8928150765606596 x 100 = -89.28%