-91.36% is the change from 845 to 73
Calculation steps:
[( 73 - 845 ) ÷ 845] x 100 = -91.36%
Formula
Percentage change = [(73 - 845) / 845] x 100
Subtract the new number by the original number
73 - 845 = -772
-772 ÷ 845 = -0.9136094674556213
-0.9136094674556213 x 100 = -91.36%