210.98% is the change from 82 to 255
Calculation steps:
[( 255 - 82 ) ÷ 82] x 100 = 210.98%
Formula
Percentage change = [(255 - 82) / 82] x 100
Subtract the new number by the original number
255 - 82 = 173
173 ÷ 82 = 2.1097560975609757
2.1097560975609757 x 100 = 210.98%