978.43% is the change from 51 to 550
Calculation steps:
[( 550 - 51 ) ÷ 51] x 100 = 978.43%
Formula
Percentage change = [(550 - 51) / 51] x 100
Subtract the new number by the original number
550 - 51 = 499
499 ÷ 51 = 9.784313725490197
9.784313725490197 x 100 = 978.43%