218.39% is the change from 261 to 831
Calculation steps:
[( 831 - 261 ) ÷ 261] x 100 = 218.39%
Formula
Percentage change = [(831 - 261) / 261] x 100
Subtract the new number by the original number
831 - 261 = 570
570 ÷ 261 = 2.1839080459770117
2.1839080459770117 x 100 = 218.39%