-67.2% is the change from 311 to 102
Calculation steps:
[( 102 - 311 ) ÷ 311] x 100 = -67.2%
Formula
Percentage change = [(102 - 311) / 311] x 100
Subtract the new number by the original number
102 - 311 = -209
-209 ÷ 311 = -0.6720257234726688
-0.6720257234726688 x 100 = -67.2%