-70.3% is the change from 101 to 30
Calculation steps:
[( 30 - 101 ) ÷ 101] x 100 = -70.3%
Formula
Percentage change = [(30 - 101) / 101] x 100
Subtract the new number by the original number
30 - 101 = -71
-71 ÷ 101 = -0.7029702970297029
-0.7029702970297029 x 100 = -70.3%