-8.63% is the change from 336 to 307
Calculation steps:
[( 307 - 336 ) ÷ 336] x 100 = -8.63%
Formula
Percentage change = [(307 - 336) / 336] x 100
Subtract the new number by the original number
307 - 336 = -29
-29 ÷ 336 = -0.08630952380952381
-0.08630952380952381 x 100 = -8.63%