-51.89% is the change from 212 to 102
Calculation steps:
[( 102 - 212 ) ÷ 212] x 100 = -51.89%
Formula
Percentage change = [(102 - 212) / 212] x 100
Subtract the new number by the original number
102 - 212 = -110
-110 ÷ 212 = -0.5188679245283019
-0.5188679245283019 x 100 = -51.89%