-74.73% is the change from 819 to 207
Calculation steps:
[( 207 - 819 ) ÷ 819] x 100 = -74.73%
Formula
Percentage change = [(207 - 819) / 819] x 100
Subtract the new number by the original number
207 - 819 = -612
-612 ÷ 819 = -0.7472527472527473
-0.7472527472527473 x 100 = -74.73%