-18.78% is the change from 378 to 307
Calculation steps:
[( 307 - 378 ) ÷ 378] x 100 = -18.78%
Formula
Percentage change = [(307 - 378) / 378] x 100
Subtract the new number by the original number
307 - 378 = -71
-71 ÷ 378 = -0.18783068783068782
-0.18783068783068782 x 100 = -18.78%