83.4% is the change from 265 to 486
Calculation steps:
[( 486 - 265 ) ÷ 265] x 100 = 83.4%
Formula
Percentage change = [(486 - 265) / 265] x 100
Subtract the new number by the original number
486 - 265 = 221
221 ÷ 265 = 0.8339622641509434
0.8339622641509434 x 100 = 83.4%