-26.27% is the change from 415 to 306
Calculation steps:
[( 306 - 415 ) ÷ 415] x 100 = -26.27%
Formula
Percentage change = [(306 - 415) / 415] x 100
Subtract the new number by the original number
306 - 415 = -109
-109 ÷ 415 = -0.26265060240963856
-0.26265060240963856 x 100 = -26.27%