39.68% is the change from 620 to 866
Calculation steps:
[( 866 - 620 ) ÷ 620] x 100 = 39.68%
Formula
Percentage change = [(866 - 620) / 620] x 100
Subtract the new number by the original number
866 - 620 = 246
246 ÷ 620 = 0.3967741935483871
0.3967741935483871 x 100 = 39.68%