88.34% is the change from 446 to 840
Calculation steps:
[( 840 - 446 ) ÷ 446] x 100 = 88.34%
Formula
Percentage change = [(840 - 446) / 446] x 100
Subtract the new number by the original number
840 - 446 = 394
394 ÷ 446 = 0.8834080717488789
0.8834080717488789 x 100 = 88.34%