-81.3% is the change from 797 to 149
Calculation steps:
[( 149 - 797 ) ÷ 797] x 100 = -81.3%
Formula
Percentage change = [(149 - 797) / 797] x 100
Subtract the new number by the original number
149 - 797 = -648
-648 ÷ 797 = -0.8130489335006273
-0.8130489335006273 x 100 = -81.3%