-32.09% is the change from 511 to 347
Calculation steps:
[( 347 - 511 ) ÷ 511] x 100 = -32.09%
Formula
Percentage change = [(347 - 511) / 511] x 100
Subtract the new number by the original number
347 - 511 = -164
-164 ÷ 511 = -0.32093933463796476
-0.32093933463796476 x 100 = -32.09%