-98.77% is the change from 813 to 10
Calculation steps:
[( 10 - 813 ) ÷ 813] x 100 = -98.77%
Formula
Percentage change = [(10 - 813) / 813] x 100
Subtract the new number by the original number
10 - 813 = -803
-803 ÷ 813 = -0.9876998769987699
-0.9876998769987699 x 100 = -98.77%