-9.87% is the change from 851 to 767
Calculation steps:
[( 767 - 851 ) ÷ 851] x 100 = -9.87%
Formula
Percentage change = [(767 - 851) / 851] x 100
Subtract the new number by the original number
767 - 851 = -84
-84 ÷ 851 = -0.09870740305522914
-0.09870740305522914 x 100 = -9.87%