-57.73% is the change from 821 to 347
Calculation steps:
[( 347 - 821 ) ÷ 821] x 100 = -57.73%
Formula
Percentage change = [(347 - 821) / 821] x 100
Subtract the new number by the original number
347 - 821 = -474
-474 ÷ 821 = -0.5773447015834349
-0.5773447015834349 x 100 = -57.73%