-38.51% is the change from 857 to 527
Calculation steps:
[( 527 - 857 ) ÷ 857] x 100 = -38.51%
Formula
Percentage change = [(527 - 857) / 857] x 100
Subtract the new number by the original number
527 - 857 = -330
-330 ÷ 857 = -0.38506417736289383
-0.38506417736289383 x 100 = -38.51%