202.16% is the change from 278 to 840
Calculation steps:
[( 840 - 278 ) ÷ 278] x 100 = 202.16%
Formula
Percentage change = [(840 - 278) / 278] x 100
Subtract the new number by the original number
840 - 278 = 562
562 ÷ 278 = 2.0215827338129495
2.0215827338129495 x 100 = 202.16%