-51.43% is the change from 807 to 392
Calculation steps:
[( 392 - 807 ) ÷ 807] x 100 = -51.43%
Formula
Percentage change = [(392 - 807) / 807] x 100
Subtract the new number by the original number
392 - 807 = -415
-415 ÷ 807 = -0.5142503097893433
-0.5142503097893433 x 100 = -51.43%