237.35% is the change from 249 to 840
Calculation steps:
[( 840 - 249 ) ÷ 249] x 100 = 237.35%
Formula
Percentage change = [(840 - 249) / 249] x 100
Subtract the new number by the original number
840 - 249 = 591
591 ÷ 249 = 2.3734939759036147
2.3734939759036147 x 100 = 237.35%