-19.04% is the change from 415 to 336
Calculation steps:
[( 336 - 415 ) ÷ 415] x 100 = -19.04%
Formula
Percentage change = [(336 - 415) / 415] x 100
Subtract the new number by the original number
336 - 415 = -79
-79 ÷ 415 = -0.19036144578313252
-0.19036144578313252 x 100 = -19.04%