-15.7% is the change from 363 to 306
Calculation steps:
[( 306 - 363 ) ÷ 363] x 100 = -15.7%
Formula
Percentage change = [(306 - 363) / 363] x 100
Subtract the new number by the original number
306 - 363 = -57
-57 ÷ 363 = -0.15702479338842976
-0.15702479338842976 x 100 = -15.7%