-26.89% is the change from 517 to 378
Calculation steps:
[( 378 - 517 ) ÷ 517] x 100 = -26.89%
Formula
Percentage change = [(378 - 517) / 517] x 100
Subtract the new number by the original number
378 - 517 = -139
-139 ÷ 517 = -0.2688588007736944
-0.2688588007736944 x 100 = -26.89%