-8.16% is the change from 49 to 45
Calculation steps:
[( 45 - 49 ) ÷ 49] x 100 = -8.16%
Formula
Percentage change = [(45 - 49) / 49] x 100
Subtract the new number by the original number
45 - 49 = -4
-4 ÷ 49 = -0.08163265306122448
-0.08163265306122448 x 100 = -8.16%