-61.05% is the change from 873 to 340
Calculation steps:
[( 340 - 873 ) ÷ 873] x 100 = -61.05%
Formula
Percentage change = [(340 - 873) / 873] x 100
Subtract the new number by the original number
340 - 873 = -533
-533 ÷ 873 = -0.6105383734249714
-0.6105383734249714 x 100 = -61.05%