-90.26% is the change from 934 to 91
Calculation steps:
[( 91 - 934 ) ÷ 934] x 100 = -90.26%
Formula
Percentage change = [(91 - 934) / 934] x 100
Subtract the new number by the original number
91 - 934 = -843
-843 ÷ 934 = -0.9025695931477516
-0.9025695931477516 x 100 = -90.26%