-66.78% is the change from 915 to 304
Calculation steps:
[( 304 - 915 ) ÷ 915] x 100 = -66.78%
Formula
Percentage change = [(304 - 915) / 915] x 100
Subtract the new number by the original number
304 - 915 = -611
-611 ÷ 915 = -0.66775956284153
-0.66775956284153 x 100 = -66.78%