-14.89% is the change from 309 to 263
Calculation steps:
[( 263 - 309 ) ÷ 309] x 100 = -14.89%
Formula
Percentage change = [(263 - 309) / 309] x 100
Subtract the new number by the original number
263 - 309 = -46
-46 ÷ 309 = -0.1488673139158576
-0.1488673139158576 x 100 = -14.89%