-91.98% is the change from 798 to 64
Calculation steps:
[( 64 - 798 ) ÷ 798] x 100 = -91.98%
Formula
Percentage change = [(64 - 798) / 798] x 100
Subtract the new number by the original number
64 - 798 = -734
-734 ÷ 798 = -0.9197994987468672
-0.9197994987468672 x 100 = -91.98%