1777.78% is the change from 27 to 507
Calculation steps:
[( 507 - 27 ) ÷ 27] x 100 = 1777.78%
Formula
Percentage change = [(507 - 27) / 27] x 100
Subtract the new number by the original number
507 - 27 = 480
480 ÷ 27 = 17.77777777777778
17.77777777777778 x 100 = 1777.78%