-67.42% is the change from 310 to 101
Calculation steps:
[( 101 - 310 ) ÷ 310] x 100 = -67.42%
Formula
Percentage change = [(101 - 310) / 310] x 100
Subtract the new number by the original number
101 - 310 = -209
-209 ÷ 310 = -0.6741935483870968
-0.6741935483870968 x 100 = -67.42%