-97.01% is the change from 770 to 23
Calculation steps:
[( 23 - 770 ) ÷ 770] x 100 = -97.01%
Formula
Percentage change = [(23 - 770) / 770] x 100
Subtract the new number by the original number
23 - 770 = -747
-747 ÷ 770 = -0.9701298701298702
-0.9701298701298702 x 100 = -97.01%