374.58% is the change from 177 to 840
Calculation steps:
[( 840 - 177 ) ÷ 177] x 100 = 374.58%
Formula
Percentage change = [(840 - 177) / 177] x 100
Subtract the new number by the original number
840 - 177 = 663
663 ÷ 177 = 3.7457627118644066
3.7457627118644066 x 100 = 374.58%