-93.23% is the change from 813 to 55
Calculation steps:
[( 55 - 813 ) ÷ 813] x 100 = -93.23%
Formula
Percentage change = [(55 - 813) / 813] x 100
Subtract the new number by the original number
55 - 813 = -758
-758 ÷ 813 = -0.932349323493235
-0.932349323493235 x 100 = -93.23%