980.39% is the change from 51 to 551
Calculation steps:
[( 551 - 51 ) ÷ 51] x 100 = 980.39%
Formula
Percentage change = [(551 - 51) / 51] x 100
Subtract the new number by the original number
551 - 51 = 500
500 ÷ 51 = 9.803921568627452
9.803921568627452 x 100 = 980.39%