521.43% is the change from 84 to 522
Calculation steps:
[( 522 - 84 ) ÷ 84] x 100 = 521.43%
Formula
Percentage change = [(522 - 84) / 84] x 100
Subtract the new number by the original number
522 - 84 = 438
438 ÷ 84 = 5.214285714285714
5.214285714285714 x 100 = 521.43%