-39.18% is the change from 827 to 503
Calculation steps:
[( 503 - 827 ) ÷ 827] x 100 = -39.18%
Formula
Percentage change = [(503 - 827) / 827] x 100
Subtract the new number by the original number
503 - 827 = -324
-324 ÷ 827 = -0.39177750906892383
-0.39177750906892383 x 100 = -39.18%