-28.98% is the change from 873 to 620
Calculation steps:
[( 620 - 873 ) ÷ 873] x 100 = -28.98%
Formula
Percentage change = [(620 - 873) / 873] x 100
Subtract the new number by the original number
620 - 873 = -253
-253 ÷ 873 = -0.2898052691867125
-0.2898052691867125 x 100 = -28.98%