-66.78% is the change from 307 to 102
Calculation steps:
[( 102 - 307 ) ÷ 307] x 100 = -66.78%
Formula
Percentage change = [(102 - 307) / 307] x 100
Subtract the new number by the original number
102 - 307 = -205
-205 ÷ 307 = -0.6677524429967426
-0.6677524429967426 x 100 = -66.78%