120% is the change from 405 to 891
Calculation steps:
[( 891 - 405 ) ÷ 405] x 100 = 120%
Formula
Percentage change = [(891 - 405) / 405] x 100
Subtract the new number by the original number
891 - 405 = 486
486 ÷ 405 = 1.2
1.2 x 100 = 120%
Example