-62.79% is the change from 172 to 64
Calculation steps:
[( 64 - 172 ) ÷ 172] x 100 = -62.79%
Formula
Percentage change = [(64 - 172) / 172] x 100
Subtract the new number by the original number
64 - 172 = -108
-108 ÷ 172 = -0.627906976744186
-0.627906976744186 x 100 = -62.79%