-73.47% is the change from 49 to 13
Calculation steps:
[( 13 - 49 ) ÷ 49] x 100 = -73.47%
Formula
Percentage change = [(13 - 49) / 49] x 100
Subtract the new number by the original number
13 - 49 = -36
-36 ÷ 49 = -0.7346938775510204
-0.7346938775510204 x 100 = -73.47%