106.19% is the change from 420 to 866
Calculation steps:
[( 866 - 420 ) ÷ 420] x 100 = 106.19%
Formula
Percentage change = [(866 - 420) / 420] x 100
Subtract the new number by the original number
866 - 420 = 446
446 ÷ 420 = 1.061904761904762
1.061904761904762 x 100 = 106.19%