86.43% is the change from 280 to 522
Calculation steps:
[( 522 - 280 ) ÷ 280] x 100 = 86.43%
Formula
Percentage change = [(522 - 280) / 280] x 100
Subtract the new number by the original number
522 - 280 = 242
242 ÷ 280 = 0.8642857142857143
0.8642857142857143 x 100 = 86.43%