44.58% is the change from 581 to 840
Calculation steps:
[( 840 - 581 ) ÷ 581] x 100 = 44.58%
Formula
Percentage change = [(840 - 581) / 581] x 100
Subtract the new number by the original number
840 - 581 = 259
259 ÷ 581 = 0.4457831325301205
0.4457831325301205 x 100 = 44.58%