-53.73% is the change from 817 to 378
Calculation steps:
[( 378 - 817 ) ÷ 817] x 100 = -53.73%
Formula
Percentage change = [(378 - 817) / 817] x 100
Subtract the new number by the original number
378 - 817 = -439
-439 ÷ 817 = -0.5373317013463892
-0.5373317013463892 x 100 = -53.73%