-12.59% is the change from 278 to 243
Calculation steps:
[( 243 - 278 ) ÷ 278] x 100 = -12.59%
Formula
Percentage change = [(243 - 278) / 278] x 100
Subtract the new number by the original number
243 - 278 = -35
-35 ÷ 278 = -0.12589928057553956
-0.12589928057553956 x 100 = -12.59%