1211.76% is the change from 51 to 669
Calculation steps:
[( 669 - 51 ) ÷ 51] x 100 = 1211.76%
Formula
Percentage change = [(669 - 51) / 51] x 100
Subtract the new number by the original number
669 - 51 = 618
618 ÷ 51 = 12.117647058823529
12.117647058823529 x 100 = 1211.76%