-27.82% is the change from 859 to 620
Calculation steps:
[( 620 - 859 ) ÷ 859] x 100 = -27.82%
Formula
Percentage change = [(620 - 859) / 859] x 100
Subtract the new number by the original number
620 - 859 = -239
-239 ÷ 859 = -0.27823050058207216
-0.27823050058207216 x 100 = -27.82%