-21.1% is the change from 308 to 243
Calculation steps:
[( 243 - 308 ) ÷ 308] x 100 = -21.1%
Formula
Percentage change = [(243 - 308) / 308] x 100
Subtract the new number by the original number
243 - 308 = -65
-65 ÷ 308 = -0.21103896103896103
-0.21103896103896103 x 100 = -21.1%