108.44% is the change from 403 to 840
Calculation steps:
[( 840 - 403 ) ÷ 403] x 100 = 108.44%
Formula
Percentage change = [(840 - 403) / 403] x 100
Subtract the new number by the original number
840 - 403 = 437
437 ÷ 403 = 1.0843672456575681
1.0843672456575681 x 100 = 108.44%