-13.9% is the change from 820 to 706
Calculation steps:
[( 706 - 820 ) ÷ 820] x 100 = -13.9%
Formula
Percentage change = [(706 - 820) / 820] x 100
Subtract the new number by the original number
706 - 820 = -114
-114 ÷ 820 = -0.13902439024390245
-0.13902439024390245 x 100 = -13.9%