-42.19% is the change from 851 to 492
Calculation steps:
[( 492 - 851 ) ÷ 851] x 100 = -42.19%
Formula
Percentage change = [(492 - 851) / 851] x 100
Subtract the new number by the original number
492 - 851 = -359
-359 ÷ 851 = -0.4218566392479436
-0.4218566392479436 x 100 = -42.19%