-21.11% is the change from 270 to 213
Calculation steps:
[( 213 - 270 ) ÷ 270] x 100 = -21.11%
Formula
Percentage change = [(213 - 270) / 270] x 100
Subtract the new number by the original number
213 - 270 = -57
-57 ÷ 270 = -0.2111111111111111
-0.2111111111111111 x 100 = -21.11%