-91.55% is the change from 923 to 78
Calculation steps:
[( 78 - 923 ) ÷ 923] x 100 = -91.55%
Formula
Percentage change = [(78 - 923) / 923] x 100
Subtract the new number by the original number
78 - 923 = -845
-845 ÷ 923 = -0.9154929577464789
-0.9154929577464789 x 100 = -91.55%