-30.61% is the change from 147 to 102
Calculation steps:
[( 102 - 147 ) ÷ 147] x 100 = -30.61%
Formula
Percentage change = [(102 - 147) / 147] x 100
Subtract the new number by the original number
102 - 147 = -45
-45 ÷ 147 = -0.30612244897959184
-0.30612244897959184 x 100 = -30.61%