-30.61% is the change from 49 to 34
Calculation steps:
[( 34 - 49 ) ÷ 49] x 100 = -30.61%
Formula
Percentage change = [(34 - 49) / 49] x 100
Subtract the new number by the original number
34 - 49 = -15
-15 ÷ 49 = -0.30612244897959184
-0.30612244897959184 x 100 = -30.61%