106.9% is the change from 420 to 869
Calculation steps:
[( 869 - 420 ) ÷ 420] x 100 = 106.9%
Formula
Percentage change = [(869 - 420) / 420] x 100
Subtract the new number by the original number
869 - 420 = 449
449 ÷ 420 = 1.069047619047619
1.069047619047619 x 100 = 106.9%