-37.22% is the change from 814 to 511
Calculation steps:
[( 511 - 814 ) ÷ 814] x 100 = -37.22%
Formula
Percentage change = [(511 - 814) / 814] x 100
Subtract the new number by the original number
511 - 814 = -303
-303 ÷ 814 = -0.37223587223587223
-0.37223587223587223 x 100 = -37.22%