-28.99% is the change from 69 to 49
Calculation steps:
[( 49 - 69 ) ÷ 69] x 100 = -28.99%
Formula
Percentage change = [(49 - 69) / 69] x 100
Subtract the new number by the original number
49 - 69 = -20
-20 ÷ 69 = -0.2898550724637681
-0.2898550724637681 x 100 = -28.99%