-16.61% is the change from 813 to 678
Calculation steps:
[( 678 - 813 ) ÷ 813] x 100 = -16.61%
Formula
Percentage change = [(678 - 813) / 813] x 100
Subtract the new number by the original number
678 - 813 = -135
-135 ÷ 813 = -0.16605166051660517
-0.16605166051660517 x 100 = -16.61%