-83.33% is the change from 612 to 102
Calculation steps:
[( 102 - 612 ) ÷ 612] x 100 = -83.33%
Formula
Percentage change = [(102 - 612) / 612] x 100
Subtract the new number by the original number
102 - 612 = -510
-510 ÷ 612 = -0.8333333333333334
-0.8333333333333334 x 100 = -83.33%