669.23% is the change from 13 to 100
Calculation steps:
[( 100 - 13 ) ÷ 13] x 100 = 669.23%
Formula
Percentage change = [(100 - 13) / 13] x 100
Subtract the new number by the original number
100 - 13 = 87
87 ÷ 13 = 6.6923076923076925
6.6923076923076925 x 100 = 669.23%