-99.35% is the change from 307 to 2
Calculation steps:
[( 2 - 307 ) ÷ 307] x 100 = -99.35%
Formula
Percentage change = [(2 - 307) / 307] x 100
Subtract the new number by the original number
2 - 307 = -305
-305 ÷ 307 = -0.993485342019544
-0.993485342019544 x 100 = -99.35%