-64.1% is the change from 947 to 340
Calculation steps:
[( 340 - 947 ) ÷ 947] x 100 = -64.1%
Formula
Percentage change = [(340 - 947) / 947] x 100
Subtract the new number by the original number
340 - 947 = -607
-607 ÷ 947 = -0.6409714889123548
-0.6409714889123548 x 100 = -64.1%