-56.91% is the change from 810 to 349
Calculation steps:
[( 349 - 810 ) ÷ 810] x 100 = -56.91%
Formula
Percentage change = [(349 - 810) / 810] x 100
Subtract the new number by the original number
349 - 810 = -461
-461 ÷ 810 = -0.5691358024691358
-0.5691358024691358 x 100 = -56.91%