-41.83% is the change from 851 to 495
Calculation steps:
[( 495 - 851 ) ÷ 851] x 100 = -41.83%
Formula
Percentage change = [(495 - 851) / 851] x 100
Subtract the new number by the original number
495 - 851 = -356
-356 ÷ 851 = -0.418331374853114
-0.418331374853114 x 100 = -41.83%