330.77% is the change from 195 to 840
Calculation steps:
[( 840 - 195 ) ÷ 195] x 100 = 330.77%
Formula
Percentage change = [(840 - 195) / 195] x 100
Subtract the new number by the original number
840 - 195 = 645
645 ÷ 195 = 3.3076923076923075
3.3076923076923075 x 100 = 330.77%