7515.38% is the change from 13 to 990
Calculation steps:
[( 990 - 13 ) ÷ 13] x 100 = 7515.38%
Formula
Percentage change = [(990 - 13) / 13] x 100
Subtract the new number by the original number
990 - 13 = 977
977 ÷ 13 = 75.15384615384616
75.15384615384616 x 100 = 7515.38%