-25.3% is the change from 506 to 378
Calculation steps:
[( 378 - 506 ) ÷ 506] x 100 = -25.3%
Formula
Percentage change = [(378 - 506) / 506] x 100
Subtract the new number by the original number
378 - 506 = -128
-128 ÷ 506 = -0.25296442687747034
-0.25296442687747034 x 100 = -25.3%