81.38% is the change from 290 to 526
Calculation steps:
[( 526 - 290 ) ÷ 290] x 100 = 81.38%
Formula
Percentage change = [(526 - 290) / 290] x 100
Subtract the new number by the original number
526 - 290 = 236
236 ÷ 290 = 0.8137931034482758
0.8137931034482758 x 100 = 81.38%