651.47% is the change from 68 to 511
Calculation steps:
[( 511 - 68 ) ÷ 68] x 100 = 651.47%
Formula
Percentage change = [(511 - 68) / 68] x 100
Subtract the new number by the original number
511 - 68 = 443
443 ÷ 68 = 6.514705882352941
6.514705882352941 x 100 = 651.47%