-0.93% is the change from 215 to 213
Calculation steps:
[( 213 - 215 ) ÷ 215] x 100 = -0.93%
Formula
Percentage change = [(213 - 215) / 215] x 100
Subtract the new number by the original number
213 - 215 = -2
-2 ÷ 215 = -0.009302325581395349
-0.009302325581395349 x 100 = -0.93%