-67.69% is the change from 947 to 306
Calculation steps:
[( 306 - 947 ) ÷ 947] x 100 = -67.69%
Formula
Percentage change = [(306 - 947) / 947] x 100
Subtract the new number by the original number
306 - 947 = -641
-641 ÷ 947 = -0.6768743400211193
-0.6768743400211193 x 100 = -67.69%