-16.73% is the change from 813 to 677
Calculation steps:
[( 677 - 813 ) ÷ 813] x 100 = -16.73%
Formula
Percentage change = [(677 - 813) / 813] x 100
Subtract the new number by the original number
677 - 813 = -136
-136 ÷ 813 = -0.16728167281672818
-0.16728167281672818 x 100 = -16.73%