77.21% is the change from 215 to 381
Calculation steps:
[( 381 - 215 ) ÷ 215] x 100 = 77.21%
Formula
Percentage change = [(381 - 215) / 215] x 100
Subtract the new number by the original number
381 - 215 = 166
166 ÷ 215 = 0.772093023255814
0.772093023255814 x 100 = 77.21%