If i estamate a price of a game to be 175$ but the real anwser is 225$ what is the percent error

Subtract obtained value from exact value to get difference: 225 - 175 = 50

Divide difference by exact value to get a ratio: 50/225 = 0.22 (repeating)

Multiply ratio by 100 to get a percent: 0.22 (repeating) * 100 = 22.22 (repeating) %

Replace repeating with the sign if you can.