-6.51% is the change from 215 to 201
Calculation steps:
[( 201 - 215 ) ÷ 215] x 100 = -6.51%
Formula
Percentage change = [(201 - 215) / 215] x 100
Subtract the new number by the original number
201 - 215 = -14
-14 ÷ 215 = -0.06511627906976744
-0.06511627906976744 x 100 = -6.51%