-59.43% is the change from 838 to 340
Calculation steps:
[( 340 - 838 ) ÷ 838] x 100 = -59.43%
Formula
Percentage change = [(340 - 838) / 838] x 100
Subtract the new number by the original number
340 - 838 = -498
-498 ÷ 838 = -0.594272076372315
-0.594272076372315 x 100 = -59.43%