228.4% is the change from 81 to 266
Calculation steps:
[( 266 - 81 ) ÷ 81] x 100 = 228.4%
Formula
Percentage change = [(266 - 81) / 81] x 100
Subtract the new number by the original number
266 - 81 = 185
185 ÷ 81 = 2.2839506172839505
2.2839506172839505 x 100 = 228.4%