509.52% is the change from 84 to 512
Calculation steps:
[( 512 - 84 ) ÷ 84] x 100 = 509.52%
Formula
Percentage change = [(512 - 84) / 84] x 100
Subtract the new number by the original number
512 - 84 = 428
428 ÷ 84 = 5.095238095238095
5.095238095238095 x 100 = 509.52%