390.24% is the change from 82 to 402
Calculation steps:
[( 402 - 82 ) ÷ 82] x 100 = 390.24%
Formula
Percentage change = [(402 - 82) / 82] x 100
Subtract the new number by the original number
402 - 82 = 320
320 ÷ 82 = 3.902439024390244
3.902439024390244 x 100 = 390.24%