3.94% is the change from 837 to 870
Calculation steps:
[( 870 - 837 ) ÷ 837] x 100 = 3.94%
Formula
Percentage change = [(870 - 837) / 837] x 100
Subtract the new number by the original number
870 - 837 = 33
33 ÷ 837 = 0.03942652329749104
0.03942652329749104 x 100 = 3.94%