1252.94% is the change from 51 to 690
Calculation steps:
[( 690 - 51 ) ÷ 51] x 100 = 1252.94%
Formula
Percentage change = [(690 - 51) / 51] x 100
Subtract the new number by the original number
690 - 51 = 639
639 ÷ 51 = 12.529411764705882
12.529411764705882 x 100 = 1252.94%