-91.38% is the change from 847 to 73
Calculation steps:
[( 73 - 847 ) ÷ 847] x 100 = -91.38%
Formula
Percentage change = [(73 - 847) / 847] x 100
Subtract the new number by the original number
73 - 847 = -774
-774 ÷ 847 = -0.9138134592680047
-0.9138134592680047 x 100 = -91.38%