-95.07% is the change from 304 to 15
Calculation steps:
[( 15 - 304 ) ÷ 304] x 100 = -95.07%
Formula
Percentage change = [(15 - 304) / 304] x 100
Subtract the new number by the original number
15 - 304 = -289
-289 ÷ 304 = -0.9506578947368421
-0.9506578947368421 x 100 = -95.07%