-68.4% is the change from 307 to 97
Calculation steps:
[( 97 - 307 ) ÷ 307] x 100 = -68.4%
Formula
Percentage change = [(97 - 307) / 307] x 100
Subtract the new number by the original number
97 - 307 = -210
-210 ÷ 307 = -0.6840390879478827
-0.6840390879478827 x 100 = -68.4%