-41.2% is the change from 869 to 511
Calculation steps:
[( 511 - 869 ) ÷ 869] x 100 = -41.2%
Formula
Percentage change = [(511 - 869) / 869] x 100
Subtract the new number by the original number
511 - 869 = -358
-358 ÷ 869 = -0.41196777905638665
-0.41196777905638665 x 100 = -41.2%