105.7% is the change from 421 to 866
Calculation steps:
[( 866 - 421 ) ÷ 421] x 100 = 105.7%
Formula
Percentage change = [(866 - 421) / 421] x 100
Subtract the new number by the original number
866 - 421 = 445
445 ÷ 421 = 1.0570071258907363
1.0570071258907363 x 100 = 105.7%