-57.8% is the change from 917 to 387
Calculation steps:
[( 387 - 917 ) ÷ 917] x 100 = -57.8%
Formula
Percentage change = [(387 - 917) / 917] x 100
Subtract the new number by the original number
387 - 917 = -530
-530 ÷ 917 = -0.5779716466739367
-0.5779716466739367 x 100 = -57.8%