397.04% is the change from 169 to 840
Calculation steps:
[( 840 - 169 ) ÷ 169] x 100 = 397.04%
Formula
Percentage change = [(840 - 169) / 169] x 100
Subtract the new number by the original number
840 - 169 = 671
671 ÷ 169 = 3.970414201183432
3.970414201183432 x 100 = 397.04%