-38.11% is the change from 824 to 510
Calculation steps:
[( 510 - 824 ) ÷ 824] x 100 = -38.11%
Formula
Percentage change = [(510 - 824) / 824] x 100
Subtract the new number by the original number
510 - 824 = -314
-314 ÷ 824 = -0.38106796116504854
-0.38106796116504854 x 100 = -38.11%