-3.58% is the change from 837 to 807
Calculation steps:
[( 807 - 837 ) ÷ 837] x 100 = -3.58%
Formula
Percentage change = [(807 - 837) / 837] x 100
Subtract the new number by the original number
807 - 837 = -30
-30 ÷ 837 = -0.035842293906810034
-0.035842293906810034 x 100 = -3.58%