-58.02% is the change from 817 to 343
Calculation steps:
[( 343 - 817 ) ÷ 817] x 100 = -58.02%
Formula
Percentage change = [(343 - 817) / 817] x 100
Subtract the new number by the original number
343 - 817 = -474
-474 ÷ 817 = -0.5801713586291309
-0.5801713586291309 x 100 = -58.02%