-67.38% is the change from 938 to 306
Calculation steps:
[( 306 - 938 ) ÷ 938] x 100 = -67.38%
Formula
Percentage change = [(306 - 938) / 938] x 100
Subtract the new number by the original number
306 - 938 = -632
-632 ÷ 938 = -0.673773987206823
-0.673773987206823 x 100 = -67.38%