-28.09% is the change from 299 to 215
Calculation steps:
[( 215 - 299 ) ÷ 299] x 100 = -28.09%
Formula
Percentage change = [(215 - 299) / 299] x 100
Subtract the new number by the original number
215 - 299 = -84
-84 ÷ 299 = -0.2809364548494983
-0.2809364548494983 x 100 = -28.09%