-28.65% is the change from 869 to 620
Calculation steps:
[( 620 - 869 ) ÷ 869] x 100 = -28.65%
Formula
Percentage change = [(620 - 869) / 869] x 100
Subtract the new number by the original number
620 - 869 = -249
-249 ÷ 869 = -0.286536248561565
-0.286536248561565 x 100 = -28.65%