-36.31% is the change from 851 to 542
Calculation steps:
[( 542 - 851 ) ÷ 851] x 100 = -36.31%
Formula
Percentage change = [(542 - 851) / 851] x 100
Subtract the new number by the original number
542 - 851 = -309
-309 ÷ 851 = -0.36310223266745006
-0.36310223266745006 x 100 = -36.31%