-67.89% is the change from 950 to 305
Calculation steps:
[( 305 - 950 ) ÷ 950] x 100 = -67.89%
Formula
Percentage change = [(305 - 950) / 950] x 100
Subtract the new number by the original number
305 - 950 = -645
-645 ÷ 950 = -0.6789473684210526
-0.6789473684210526 x 100 = -67.89%